Machine for shaping the heads of barrels or the like.



ALM. GRIFFIN, v MACHINE FOR SHAPING THE HEADS OF'BARRELS OR THE LIKE.

1 APPLIQVAUON man muss, 191s. 1,262,780, Patented Apr. 16, 1918. v j I I 3 SHEETSSHEET 1.

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- v A. M. GRIFFIN.

MACHINE roa SHAPING THE HEADS 0F mans on THE LIKE.

APPLICATION FILED MAYIB, 1916.

1,262,780. Patented Apr. 16, 1918.

3 SHEETS-SHEET 2.

% fr ma a A TTORNE Y I A. M. GRIFFIN.

MACHINE FOR SHAPING THE HEADS 0F BARRELS OR THE LIKE.

APPLICATION FILED MAY 16, 1916.

Patented Apr. 16, 1918.

3 SHEETSSHEET 3.

36 a 29 37 T 6 53 l .29

ALVAH M. GRIFFIN, OF KANSAS CITY, MISSOURI, ASSIGNOR F ONE-HALF TQANDREW A. KRAMER, OF KANSAS CITY, KANSAS.

MACHINE FOR SHAPING THE HEADS 0F BABRE'LS OR THE LIKE.

Specification of Letters Patent.

Patented A t. 1c, 1918.

Application filed May 16,1916. Serial No. 97,767.

' To all whom it may concern.

Be it known that I, ALvAH M. GRIFFIN, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Machines for Shaping the Heads of Barrels or the like;

and I do declare the following to be a full,

clear, and exact description. of the invention, such. as will enableothers skilled in the Y art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to a machine for shaping the heads of barrels or the like,

and has for its principal object to form the concave in a piece of sheet metal to adapt it for use as the head of a barrel, tank, or other container.

In accomplising this object, I have provided improved details of structure, the preferred forms of which are illustrated in the accompanying drawings, wherein Figure I is an elevation of a bodying my improvements, a part of the shaper arm housing being broken away for better illustration.

Fig. II is -.a vertical section on the line II-II (Fig. I), except for the work table and supporting ring which are shown in central vertical section.

Fig. III is a side elevation of the machine. v

Fig. IV is a cross section onthe line IV-IV (Fig. I).

Fig. V is a detail perspective view of one of the traveler members.

Fig. VI isja detail view of the friction drive shaft.

Referring more in ingsz- 1 designatesa supporting base, which is detail to the drawraised from .the floor by legs 2, in order to machine emthe base 1 midway be-.

ing 8 and extends below the base 1, and mounted on the table is a supporting ring 11 of substantial structure. The ring 11 1s I surrounded by studs 12 which project through radially extending slots 12 in the work table, and have threaded upper ends for carrying nuts 13, the said studs bein arranged at suitable intervals determine by the adjustment necessary for holding the piece of metal to be shaped upon the ring, as presently described.

Slidably mounted on the. studs 12, is a clamp 14, which is substantially Z shaped, one of the flanges 14, having apertures for mounting the clamp on the studs, and the other flange 14 overlying the ring 11 in order to press a piece of metal 15 against the upper edge of the ring, it being apparent that when the clamp is in place and the nuts 13 tightened on their bolts the metal plate will be tightly operation.

Slidably mounted for vertical adjustment on the standards 5, beneath the top beam 6,

is a cross arm 17, which is supported from the top beam 6 by a screw 18 and wheel 19, the lower end of the screw being fixed to the cross arm and the wheel having a collar clamped against the ring and- -will be held in place during the shaping 2O bearing on the top beam to support the screw, so that adjustment of the cross arm may be had by manipulation of the -wheel to raise or lower the arm.

' Fixed to the cross arm 17 and suspended therebeneath, in spaced relation to provide an opening therebetween are housing plates 2223, preferably comprising heavy sheetmetal members that are secured to the heads 24 of the cross arm by bolts 25, the present drawing showing the plates to be welded or otherwise secured to angle irons 26 which carry the bolts. The housing plates 22-23 are spaced by plates and extending therebetween is an axle 28, which carries collars 29-29, that are rotatable on the axle independently of each other. Formed integrally with each collar is a split sleeve 3031, having ears 32, that carry a bolt 33, whereby the sleeve may be brought together to clamp an arm 3435 therein. The sleeves 2829 are adapted for independent movement on the axle and the arms 34-35 extend slidably through sleeves 36-37 on travelers which will presently be described, so that the travelers may move towardv or from each other and will carry the arms 3435 with them to bring the arms together or spread the same apart.

Fixed to the standards 5 between the Work table and the housing plates are brackets 39-40 also preferably compr sing split collars having ears 41 t2, provided with bolts 43-44t whereby the collars are clamped to the standards and having hear-- ing members-5L5 projectmglaterally from the standards and in position to carry a shaft 46 parallel with the cross arm 17 and with the top of the work table. The shaft 46 is threaded between the standards, the part of the shaft at one side of the center of the machine having a right-hand screw thread and the part at the opposite side having a left-hand screw thread, so that when the shaft is revolved, the traveler members carried by the right and left-hand screw parts will be moved in opposite d1- rections.

Threaded onto the respective screw members, are sleeves 5051 which are also preferably of split construction and each of which is provided with a transverse stud 52. Rotatably mounted on the studs 52 of the screw sleeves 50, or 51, so as to have pivotal movement about the studs are collars 5354:, which are fixed on the shaper arm sleeves 3637. With this arrangement, when the screw is revolved in one direction, the screw sleeves 50 and 51 are moved inwardly to bring the arms 3135 toward each other and when revolved in the opposite direction are moved apart to spread the arms. Fixed to the lower end of each of the arms 3435, is a transverse shaft 55, and rotatably mounted on said shaft is a roller 57 that is adapted for hearing against the metal plate 15 that is held by the ring 11 onthe work table and is pressed thereagainst when the arms are brought together in order to shape the metal, the edges of the rollers being curved in order to avoid cutting or marking the metal and to facilitate the shaping operatio The screw shaft 46 carries spaced friction disks 5960 and located between said disks is a driving wheel 61, which is adapted for frictional engagement with either of the disks and is fixed on a shaft 62, which is rotatably mounted in bearings 63-6at on the brackets 65-66, the bracket 65 being attached to the adjacent standard 5 and the bracket '66 to the machine base 1. The hearing member63 on the upper bracket 65 is slidably mounted on the bracket. but keyed thereto by a pin and slot combination 67 and connected with the bearing is a link 69, the innerend of which has a slot 7 0 therein.

Mounted on the standard 5 is a stub axle 72, and rotatably mounted'on said axle is the hub 73 of a shifting lever comprising meshes with a bevel the upper and lower arms 74 and 75, the lower arm being provided with a bolt 76, which projects through the slot in the link 69 and fixes the link to the lever arm. The upper lever arm 7-1 carries a Weight 7 7 whereby the lever may be thrown to either side of the center and pivotally connected with said arm 74 is a rod 78, that is slidably projected through an aperture 79 in the adjacent travel collar 53 and carries buttons 8081 at opposite sides of the collar; the buttons being fixed to the rods so that when the traveler is in motion and engages a button it will move the rod to shift the lever and thereby shift the friction drive shaft 62 so that its operative engagement will be transferred from the disk 59 to the disk 60 or vice versa, thereby changing the direction of travel of the worm shaft.

Fixed to the lower end of the friction drive shaft 62 is a bevel gear wheel 84 which gear wheel 85 on a shaft 86 which is rotatably mounted in bearings on the supporting legs 2 of the base 1, and which also carries a tight and loose pulley 87. Run over the pulley 87 is a drive belt 88, which may be connected with any suitable source of power (not shown) and which is controllable by a shifter rod 89, having the yoke 90 in operative relation with the belt and having a handle 91 at its opposite end. Also fixed on the shaft 86 is a second bevel gear wheel 92, which meshes with a bevel gear wheel 93 on a stub axle 94 that is suspended from the base 1 and is rigidly connected with a pinion 95 which meshes with a gear wheel 96 On the vertical axle 10, which carries the work table 9.

Assuming that the parts are constructed and assembled as described, a piece of sheet metal 15 is mounted on the supporting ring on the work table and clamped to the edges of the ring by the clamp 13. The shaper arms ;are then arranged with the rollers 57 in contact with the metal sheet above, or at the inner edge of the ring, and the friction drive mechanism positioned to rotate the screw, so that the shaper arms will move toward each other.

As the machine continues its operation, the arms draw together and as they operate on the arc of a circle, the rollers at the free ends of the arms move downwardly as well as inwardly so that they tend to come together at the center of the ring. While the shaper arms are converging as described, the work table is rotated, so that the metal sheet travels beneath the rollers and the latter describing convolutions on the surface of the plate tend to force the plate clownwardly to form a concave therein. This double operation of the shaper arms and table continues until the arms are substan tially vertical or perpendicular to the table, when the concave has been formed in the mean/so metal sheet. At this point in the operation, the traveler collar 53 engages the inner button 81 on the shift rod and moves the rod inwardly, shifting the lever and moving the link 69 outwardly so that the friction wheel 61 on the rod 62 is forced out of engagement with the disk 60 and into engagement with the disk 59, passing over its center to efiect change in contact, so that the direction of travel of the screw shaft is reversed and the shaper arms are moved back to their initial position.

When the shaper arms are back to their initial position, the machine is stopped by centering the shift lever arm 74, so that the friction member 61 will be midway between the disks 59 and 60, but in contact with neither, so that the screw shaft and shaper arms remain stationary.

If so desired, the machine may be stopped by manipulation of the belt 89 to move the belt from the tight to the loose pulley wheel instead of by actuating the shift lever.

When a shaping operation has been concluded as described and it is desired to remove the formed plate from the table, the

button 80 is shifted on the rod 78, so that the collar 50 may. continue to travel outwardly on the screw shaft 16 until the formed head isv exposed so that it may be removed from the ring 11. A new plate is then secured thereon and the mechanism reversed to draw the arms 34-35 inwardly so that the button 80 may be reset and the operation performed as before described.

If it is desired to form a head of diiferent diameter and with a different radius of curvature, the cross arm 17 is raised by manipulation of the wheel 19 on the vertical screw and the shifter arms and rollers are lifted from the work table. The ring 11.

and clamp 14 are then released by removal of the bolt nuts 13 and the bolts 12 are shifted inwardly, or outwardly along the slots 12 to conform with a ring and clamp of the desired diameter.

The radius of curvature desired is then obtained by shifting the arms 34-35 within the collars 30-31 to the proper len th and tightening the same therein. A. er placing a plate 15 on the ring 11 and clamping the same therein by the clamp 14:, the cross arm 17 is lowered by manipulation of the wheel 19 to bringthe rollers 57 into proper relation with the plate 15 and then the operation carried on as as before described.

It is apparent that with the apparatus described the combined turning movement of the work table and the converging travel of the shaper arms cooperate to expand the metal sheet to the concave contour that is centrically placed on said table,

' members, a collar mounted on each of said members, an axle on each collar, a sleeve on each of said "axles, pivotally mounted arms slidably extended through said sleeve, contact members carried by said arms, means for rotating the screw to efiect convergence of the arms, means for reversingthe direction of travel of said screw to effect'divergence of said arms, reversible driving mechanism for the screw comprising a shifting lever, lever, sides of one of the guide sleeves, engagement by the sleeve to actuate shifting lever.

. 3. The combination with a work holding element, of standards at opposite sides of said element, a beam fixedly mounted on a rod connected with said shifting and buttons on said rod, on opposite adapted for the said standards, a cross arm slidably mounted on said standard, spaced housing plates suspended from the cross arms, an axle carried by said plates, collars pivot-ally mounted on said'axle. shaper arms carried by said collars, traveler members in guiding relation with said arms, and means for eifecting convergence and divergence of said traveler members for the purpose set forth.

4. The combination with spaced standards, a cross arm movable vertically on said standards, shaper arms pivotally suspended from said cross arm and means for effecting convergence and divergence of the shaper arms, of a work holding element comprising a table rotatably mounted between said standards having radially extending slots therethrough, a work supporting ring cona peripheral ring having apertures therein registering with said ta le slots, a clamp member adapted for seating over said work supporting ring having apertures therem registering with the table slots and bolts projecting through the table slots and rmg flange and clamp apertures to hold the same in functional position for'the purpose set forth. I In testimony whereof I aflix my signature. ALVAH M. GRIFFIN.

flange on said 

